354 PROCEEDINGS OF THE NATIONAL MUSEUM vol.»s 



Fore tibia (pi. 30, fig. 12) with sides entire, nearly straight and sub- 

 parallel, terminal mucro long and stout, curved; distal end with three 

 submarginal, socketed teeth. 



Male. — Somewhat shorter (1.34 mm. long) and stouter (2.61 times 

 as long as wide) ; irons transversely impressed below ; anterior margin 

 of pronotum distinctly serrate, anterior area more strongly asperate ; 

 vestiture of elytral declivity more broadly spatulate, scalelike, that on 

 third interspaces longer than on others. 



Type locality. — Brownsville, Tex. 



Host. — Vachellia farn-esiana (L.) W. and A. 



Type material. — Holotype, allotype, and nine paratypes, U.S.N.M. 

 No. 56405. 



The type series was reared by H. S. Barber in 1904 from limbs of 

 Vachellia farnesiana pruned by Oncideres sp. 



THYSANOES RETAMAE, new species 



Plate 30, Figure 14 



Female. — Reddish brown, with posterior half of pronotum lighter; 

 1.41 mm. long, 2.57 times as long as wide. 



Frons strongly concave between eyes, distinctly margined, with a 

 few rather short hairs directed dorsad, and with a few finer, longer 

 hairs directed orad from the epistoma. Eye moderately broad, oval, 

 inner margin entire, facets rather coarse. Antenna (pi. 30, fig. 14) 

 with club and scape subequal in length, funicle somewhat shorter, 

 scape rudely club shaped, with a sparse fringe of rather long hairs; 

 funicle 6-segmented, with pedicel more than one-third of total length, 

 distal segments progressively wider; club 1.45 times as long as wide, 

 sutures all setose, and all arcuate. 



Pronotum almost exactly as wide as long, widest slightly behind 

 middle, posterior outline weakly arcuate, posterior angles scarcely 

 rounded; sides arcuate from base to distinct constriction anterior to 

 middle, very broadly rounded in front, anterior margin not serrate; 

 anterior area with sparse, broad, low asperities, and short, stout, scale- 

 like setae; summit moderate, very near middle; posterior area hori- 

 zontal, surface subopaque, finely reticulate, with fine, shallow punc- 

 tures bearing short, spatulate setae. 



Elytra very slightly narrower than pronotum and 1.61 times as long, 

 1.67 times as long as wide; sides subparallel on anterior two-thirds, 

 rather broadly rounded behind; surface shining, roughly punctured; 

 strial punctures, deep, rather large, in regular rows, only the first stria 

 impressed; interspaces narrow, rugose, with fine punctures bearing 

 short, erect, scalelike or spatulate setae, longer and coarser posteriorly. 

 Declivity steeply arched, convex, with strial punctures deep but slightly 

 smaller than on disk ; interspaces narrow, rugose, with numerous con- 



